Coiling machine



C. D. DALLAS Oct. 2l, 1930.

GOILING MACHINE Filed Jan. 16 1929 2 Sheets-Sheet l 30 described.

l Patented Oct. 21,'.1930

i" UNITED STATES CHARLES D. DALLAS, or CHICAGO, ILLINOIS coILINe MACHINEApplicationhled January 16, 1929. Serial No. 332,797.

My invention relates to a device sometimes called a tail-puller which isadapted for "winding flat strips or sheets of material into coils, andmore particularly it relates to a device adapted to impart a permanentcurvature to a substantial portion of such sheets whereby the curvedportion is caused to coil about itself leaving one straight end forminga tail or appendage for convenience in handling the coil or roll ofmetal after winding. In annealing or re-winding long strips, sheets ofmetal or performing other operations thereon, it is necessary to havesuch sheets formed into coils for economy of space and convenience inhandling. If the sheet of material from which the coil is formed is ofany considerable thickness, it is frequently diflicult to again engagethe free'end of n the coil between rollers for re-rolling, re-

" winding or other purposes. -To meet this difhculty, it is desirablethat a short portion of the outer free end of the coil be tangential tothe coil or otherwise substantially straight, land one obj ect of theinvention is to provide a device capable of imparting a permanentcurvature to a portion of the sheet of metal, whereby it is formed intoa coilland leaves an uncurved portion which forms an appendage or tailof any desired length for the purpose Another obj ect of the inventionis the provision of a machine or device of the class described which issimple in construction, easily manipulated and can be manufacturedeconomically.

Many other objects and advantages of the v construction herein shown anddescribed will be obvious to those skilled in the art from thedisclosure herein given.

To this end my invention consists in the novel construction, arrangementand combi.- nation of parts herein shown and described, and moreparticularly pointed out in the claims.

In the drawings, wherein like reference characters indicate like orcorresponding parts:

Fig. 1 is a front elevational view of the de- 50 vice;

Fig. 2 is av view along the line 2-2 of Fig. l;

Fig. 3 is a view along the line 3-3 of Fig. 1 drawn to a larger scale;

Fig 4 is a View along the line 4-4 of Fig. 3- an ,Fig. 5 is a view alongthe line 5-5 of Fig. 2. Referring now to the drawings forming a part ofthis specificationtthe numeral 10 generally designates a framecomprising upright 'end portions 11 and 12 suitably fastened together bytransversely extending rods 13 and 15. A pair of forwardly projectingplates 24 are mounted one on each of the upright portions 11 and 12. Theplates 24 provide a mounting for an upper roller 16 and a pair ofrollers 17 between which a sheet of mate-v rial 56 travelsk while beingsubjected to the j curving or the winding operation. One end of theroller 1'? projects through the plate 24 and provides a mounting Jfor agear 18 to which a driving shaft 20 is operatively connected. ATherollers 17 each have a gear 19 mounted-thereon in position to mesh withthe gear 18. The shaft 20 is connected with any source of power (notshown), and actuates the rollers to feed the sheet of metal to the rightas observed in Fig. 2.

Rollers 25 and 26 are positioned at the middle of the device and spacedapart suiciently to permit the sheet 56 to travel therebetween. Blocks27 and threaded rods 28 are provided at each end for adjusting the spacebetween the rollers 25 and 26. The rollers 25 and 26 perform the initialoperation of re- -moving such kinks or bends as may be in the sheet 56.A driving shaft or any other suitable means (not shown) connected with asource of power may be provided to rotate the rollers 25 and 26.' Thatportion of the sheet 56 which has been subjected to the rollingoperation resulting in its permanent curvature is shown in full lineposition as coiled about itself in Fig. 2. j.

The curvature imparted to the sheet of metal or the like as it passesbetween the rollers 16 and 17 causes the sheet toturn upwardly and towind itself into a roll which is supportedV by the rods 14 and a plate32.

In the full line position of the sheet 56 as l100V shown in Fig. 2, thecurving operation is sub` stantially completed and if-permitted tocontinue unimpeded to the end of the sheet will result in a self woundroll or coil of metal having its outer exposed end in close contact withthe contiguous winding. The rigidity of the curved metal will ofl'ersufficient resistance to unwinding of the free end of Aby advantage ofsimplicit whereb thevsheet as to make it diiiicult, or almostimpossible, in the case of thick sheets of metal to unwind the freeportion for again starting the sheet between rollers or the vlike fornew or additional operations. In order that the end of the sheet may beformed into a tail or appendagel which is substantially tangential tothe coil resulting from the operation I find it desirable to permit theentire sheet, including the tail end, to be subjected to the rollingoperation causin curvature, rather than release the sheet be ore' it haspassed entirely through the device, for the reason that if the metal hasan initial curvature, the a pendage `or tail will retain such curvatureollowing such release. Because the .tail end of the sheet of material issubjected to the curvature resulting from being fed between the rollers16 and 17, I have provided means producing a secondary operation tendingto curve the tail end in the opposite direct-ion in substantially thesame amount asis caused by the rollers and therestraightening out orneutralizing such curvature thus produced.

The secondary operation is independent of the primary-operation ofrolling and has the and permitting of continuous operation o the rollers16 and 17 or the like in their operative position. This secondaryoperation consists 1n moving the self-wound coil from its naturalposition above the path `of travel of the sheetto a position below suchpath of travel, thereby Causing the sheet to curve downwardly over theright hand roller 17 and straighten out the curvature. In order thatthis straightening process may be accomplished without interfering. with'the advance' of the sheet through the/device and that the tail end notbe wra ed around the main body of the sheet, 1P ave provided a platform60 and means for projectin the substantially completed coil or roll ,Yorwardly to its dotted ine position upon the platform as shown in Fig.2.-

The platform 60 is supported by posts 31. An le 1rons suitably'fastenthe platform 60 to tie posts 31. Bolts 1,62 provide adjustable fasteningmeans through slotted holes 65 the platform 60 can be raised or lowereat will.

It is obvious that if the roller 16 were positioned below the roller 17and in the same relation thereto,` that the resulting curved sheet ofmaterial 56 would naturally form into a coll below the plane of theplate. In

`tion above this plane,

such a case the partially wound coil would, of necessity, have to beelevated to a posiin order to neutralize the resulting curvature.

rIhe plate 32 has an extension 33 at each end, by means of which it 'ispivotally mounted upon the rod 15. Bars 36 are positioned one on eachupright frame 11 and 12 to support the ends of the rod 15.

Toggle mechanism is provided to rock the plate 32 about its mounting onthe rod 15 and thereby impel the coil of metal forwardly and downwardlyto the platform 60. The toggle mechanism includes links 34 and 35 ateach end of the frame 10, the links being pivotally fastened together bya pin 39. Each link 35 is pivotally connected by means of a pin 38 to anextension 33 formed on the plate 32. Each link 34 is connected Ato theadjacent bar 36 by a pin 37. The Oppositely positioned links 34 and 35are connected by a bar 40. The bar 40 has downwardly turned ends 41through which the pins 39 project and forms a pivoted connection withthe links 34 and 35. A toggle rod 42 is fastened to the middle of thebar 40 by means of a bolt 57. The upper end of the arm 42 is forked andforms a semi-circular band operatively engaging an eccentric cam 48. Aband 49 is fastened to the upwardly projecting ends of the arm 42 bymeans of bolts 50, thereby keeping the cam 48 in operative engagementwith arm 42. The eccentric cam 48 is mounted upon a shaft 43. l'Theshaft 43 is rotatably mounted in bearings 44 which are fastened tobrackets 45 by a'plurality of bolts 46. Each' of the brackets 46 isfastened to one of the upright portions 11 or 12 by means `of bolts 47.A driving shaft 21 is rotatably mounted in a bearing block 22. A bracket23 projecting from the upright portion 12 su ports the bearin block 22.

A sproc et wheel 51, is xedly mounted upon the shaft 21, to operativelyconnect the shaft with the driven shaft 43. For this purpose I haveprovided a rotatably mounted sprocket wheel 52 on the driven shaft 43.The sprocket wheel 52 is connected with the sprocket wheel 51 by asprocket chain 53. The driving shaft`21 is continuously operated and isconnected with a source of power (not shown).

The shaft 43 is normally inactive and is caused to rotate near the endof the winding process by manual operation of a clutch 54 which isslidably mounted upon the shaft. A downwardly extending arm 55 isprovided for the pur ose of throwing the clutch 54 into and out oloperative engagement with the constantly rotating sprocket-wheel 52.

The operation of the device is as follows:

The sheet of metal 56 having travelled past the 4rolls 25 and 26, or toa point where the unwound portion is the desired length of the tail orthe appendage, the clutch is thrown into operative position, therebycausing the shaft 43 to rotate. One half of a rotation of the shaft 43actuates the cam 48 and the toggle mechanism to throw the plate 32forwardly to the dotted line position shown in Fig. 4, in which positionthe roll of metal is thrown to its dotted line position on the platform60. Completion of one rotation of the shaft brings the plate 43 and thetoggle mechanism back to their full line positions, making it necessarythat the clutch be held in operative position only for one revolution ofthe shaft 43. Since the rolls 16 and 17 are continuously operated, thesheet of metal 56 continues its forward movement during and after theprojection of the roll upon the platform. 60.

-The position of the roll upon the platform'60 operates to bend themetal downwardly and counteracts the tendency to curve upwardly to thefull line position. A vertical member 66 providesa stop limiting theoutward movement of the roll upon the platform 60'.

The particular portion of the sheet which passes between the rolls 16and 17'when the coil is in its dotted line position is uncurvedsuiiiciently that it tends to remain substantially straight. It isobvious that the platform should be lower for straightening thick sheetsof metal by the counter curvature than for thin sheets, and that itshould be lower for straightening sheets of sharp curvature than forthose havinga flat curvature. The adjustability of the height of theplatform 60 by the bolts 62 ad-apts the device for providing tails orappendages for coils of material `of any degree of thickness orcurvature.

Having thus described my invention, it is obvious that variousimmaterial modifications may be made in the same without departing fromthe spirit of my invention; hence I do not wish to be understood'aslimiting myself to the exact form, construction, arrangement andcombination of parts herein shown and described or uses mentioned.

What I claim as new and desire to secure by Letters Patent is:

l. In a device of the class described, means operable to curve a sheetof material fed therethrough,- a platform at the discharge end of thedevice on one side of the plane of `said sheet suitably positioned tosupport said sheet and to permit the curved portion to wind aboutitself, a second platform operable to receive said partially wound coil,said second platform being positioned on the opposite side o-f the planeof said sheet, and means operable to impel the partially wound coil fromsaid first mentioned platform to the second platform.

2. In a device of the kind described, a plurality of rollers operable tocurve a sheet of material fed therebetween, a platform adjacent thedischarge side of said rollers adapted to receive and support the curvedportion of the sheet, as it is discharged from the rollers, saidplatform being so positioned as to permit the discharged curved portionof the sheet to unrestrainedly coil about itself and a second platformoperable to receive said partially wound coil and so positioned relativeto the discharge side of said rollers as to cause the sheet intravelling to the second mentioned platform to be curved oppositely tothe curvature produced by said rollers.

3. In a device of the kind described, a plurality of rollers operable tocurve a sheet of material fed therebetween, a platform adjacent thedischarge side of said rollers adapted to receive and support thedischarged portion of the sheet, said platform being so positionedrelative to the sheet as it emerges from the rollers as to permit thecurved ortion of the sheet to unrestrainedly coil a out itself, asecondplatform so positioned relative to the discharge side of saidrollers that the sheet in travelling to the second mentioned platform iscurved oppositely to the curvature produced by said rollers, and meansoperable to move the discharged 4portion of the sheet from the firstmentioned platform to the second mentioned platform while said sheet isbeing fed through the rollers..

4. In a coiling machine, means operable to curve a sheet of material fedtherethrough, a platform on one side of the line of travel of the sheetso positioned as to receive and support the discharged portion of thesheetand to permit the sheet to form a coil in accordance with itscurvature, a second platform positioned on the other side of the lineofl travel of said sheet, and means operable to transfer the partiallywound coil from said first mentioned platform to said second mentionedplatform while said sheet is travelling through the machine.

5. In a coiling machine, means operable to feed a sheet of materialtherethrough in a generally horizontal direction and tocurve the sheetso that its upper face 1s concave, a platform above the line of travelof the sheet so positioned relative to the discharge side of said meansas to receive and support the sheet as it is discharged from said meansand to permit the sheet 'to coil about itself in accordance with saidcurvature, a second' platform positioned below the line of travel ofsaid sheet, and means operable during said curving operation to move thedischarged portion of said sheet from the first mentioned platform tothe second mentioned platform.

6. In a coiling machine, means operable to feed a sheet of materialtherethrough in a generally horizontal direction and to curve the sheetso that its upper face is concave, a

platform positioned above the line of travel i of the sheet so as toreceive and support the sheet as 'it is discharged to permit the sheetto coil about itself in accordance with said curvature, a secondplatfrom said means and4 form positioned below the line of travel ofsaid sheet, means operable to move the dis;l

. charged portion of said sheet from the first continuously, line oftravel mentioned platform to the second mentioned platform, said secondplatform being positioned a suiicient distance below the line of travelof the sheet that continued operation of the device tends to curve theremaining port-ion of the sheet oppositely to the curvature caused bysaid means.

7. In a coiling machine, means operable to feed a sheet of materialtherethrough in a generally horizontal direction and to curve the sheetso that its upper face is concave, a platform above the line of travelof the sheet so positioned relative to the discharge side of said meansas to receive and support the sheet as it is discharged from said meansand to permit the sheet to coil about itself in accordance with saidcurvature,- la second platform positioned below the line of travel ofsaid sheet, means operable during said curving operation to movethedischarged portion of said sheet from the first mentioned platform tothe second mentioned platform for the purpose described, and adjustablemeans operable to vary the distance of said, second platform below theline of travel offthe sheet.

8. In a coiling machine, means operable to feed a sheet of materialtherethrough in a generally horizontal direction and to curve the sheetso that its upper face is concave,

a platform above the line of travel of the sheet so positioned relativeto the discharge side of said means as to receive and support the sheetas it is discharged from said means and to permit the sheet to coilabout itself in accordance with said curvature, a second plat-formpositioned below the line of travel of said sheet, means operable tomove the discharged portion of said sheet from the first mentionedplatform to the second mentioned platform,` said second platform beingpositioned a sufficient distance below the line of travel of the sheeteration of the device curves the remaining portion of the sheetoppositely to t-he curvature caused by said means and leaves saidremaming portion of the sheet substantially straight, and adjustablemeans operable to vary the distance of said second platform below theline of travel of the sheet. l

9. In a coiling machine, means operable upon feeding a sheet of materialtherethrough to impart a permanent curvature to the sheet, mechanismoperable to actuate said means a platform on one side of the of thesheet so positioned as to receive and support and to permit the sheet toform curvature, a second platform positioned on the other side of theline of travel of said sheet, means operable to transf/er the dis-4charged portion of said sheet from said first mentioned plat-form tosaid second mentioned platform without interrupting the operation thatcontinued op- .is curved downwardly a coil in accordance with its ofsaid mechanism, and astop member. on the second mentioned platformoperable to limit the forward movement of the coiled portion of saidsheet.

l0. In a device of the class described, an upper roller, a pair ofrollers positioned below and on Ieither side of the upper roller toimpart an upward curvature to a sheet of material fed between thev upperroller and the lower rollers, an upper platform suitably positionedabove the rollers, to receive and support the discharged portion of thesheet and to permit the sheet to wind itself into a coil, a platformsuitably positioned vbelow the rollers to receive said partially woundcoil, and means 'operable to impel said coil from the upper to the lowerplatform during the advance of the sheet between the rollers.

ll. ln a device of the class upper roller, a pair of rollers positionedbelow and on either side of the upper roller to impart an upwardcurvature to a sheet of material fed between the upper roller and thelower rollers, an upper platform suitably positioned above the rollersto receive and support the discharged portion of the sheet and to permitthe sheet to wind itself into a coil, a platform suitably positionedbelow said rollers to receive said partially wound coil meansv operableto impel said coil from the upper to the lower platform during theadvance of the sheet between the rollers, and means permitting verticaladjustment of the secondplatform. y

i2. ln a coiling machine, means operable to feed a sheet of materialtherethrough in a generally horizontal direction and to curve the sheetso that its u per face is concave, a platform positioned above the lineof travel of the sheet so as to receive and support vthe sheet as it isdischarged from said -means and to permit the sheet to coil about itselfin accordance with said curvature, a device operable to straighten thesheet as it is discharged from the machine, a second platform, saiddevice comprising means manually operable to move the discharged-portionof the rst mentioned sheet from said platform to said second platform,said second platform being positioned at such a distance below the lineof travel of the sheet that the sheet in travelling to said secondplatform.-

13. In a coiling machine, means operable to feed a sheet of materialtherethrough in a generally horizontal direction and to curve the sheetso that its upper face is concave, a platform above the line of travelof the sheet so positioned relative to the discharge `side of said meansas to receive and support the sheet as it is discharged from said meansand sheet upon its discharge from the machine, said device comprising asecond platform positioned below the line of tra-vel of said sheet andmeans operable during said curving operation to move the dischargedportion of sald sheet from the first mentioned platform to the secondmentioned platform for the purpose described, and adjustable meansoperable to vary'the distance of said second platform below the line oftravel of the sheet.

In witness whereof, I hereunto subscribe my name this 10th day ofJanuary A. D.,

CHARLES D.. DALLAS.

